Attempts to improve retention in conventional college settings in the United States (see Barefoot article in this issue) have emphasized the importance of institutions having good information systems and appropriate interpretation of information as a means of identifying where retention is a problem and what might be causing student withdrawal, and for monitoring the impact of interventions designed to improve retention. This article describes the information on student retention collected within the Open University (UK), its interpretation, and the uses made of such information to improve student retention. Observations are made about overall retention rates and students' reasons for withdrawing, and a model for tackling courses with low retention is described.